Bump to OPENRNDR 0.3.44-rc.3, add SSBO demo

2020-07-17 17:08:27 +02:00
parent e14c7c3d0b
commit 2a772ced79
2 changed files with 40 additions and 1 deletions
--- a/openrndr-demos/src/demo/kotlin/DemoShaderStorageBuffer01.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoShaderStorageBuffer01.kt
@@ -0,0 +1,39 @@
+import org.openrndr.application
+import org.openrndr.draw.VertexElementType
+import org.openrndr.draw.shadeStyle
+import org.openrndr.draw.shaderStorageBuffer
+import org.openrndr.draw.shaderStorageFormat
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+fun main() = application {
+    program {
+
+        val ssb = shaderStorageBuffer(shaderStorageFormat {
+            attribute("foo", VertexElementType.FLOAT32, 1000)
+
+        })
+        val ss = shadeStyle {
+            buffer("someBuffer", ssb)
+            fragmentTransform = "float a = b_someBuffer.foo[0]; b_someBuffer.foo[1] += 2.0;"
+        }
+
+        val bb = ByteBuffer.allocateDirect(ssb.format.size)
+        bb.order(ByteOrder.nativeOrder())
+
+        extend {
+            ssb.clear()
+
+            drawer.shadeStyle = ss
+            drawer.circle(100.0, 100.0, 200.0)
+            bb.rewind()
+            ssb.read(bb)
+            bb.rewind()
+            val f0 = bb.float
+            val f1 = bb.float
+            println(f1)
+
+        }
+
+    }
+}